Link for light-fixtures.



W. C. HUNT.

LINK FOR LIGHT FIXTURES.

APPLICATION FILED APR. 9, 1914.

1,,136,531, Patented Apr. 20, 1915.

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WILLIAM G. HUNT, OF TORONTO, ONTARIO, CANADA.

LINK FOR LIGHT-FIXTURES.

Specification of Letters Patent.

Patented Apr. 2o, rare.

Application filed April 9, 1914. Serial No. 830,761.

To all whom it may concern Be it lmown that I, VVILLLAM CHARLES HUNT, a subject of the King of Great Britain, and a resident of the city of Toronto, in the county of York, in the Province of Ontario, in the Diminion of Canada, have invented certain new and useful Improvements in Links for Light-Fixtures, and do hereby declare that the following is a full, clear, and exact description of same.

This invention relates to improvements in, and in the method of manufacturing, links such as are used for the attachment of ornamental chains, or the like, to electric fixtures and are provided with a boss which may be threaded to enable the said link to be secured to the fixture, or other article, with which it is desired to be used. Hitherto it has been usual in manufacturing such links to cast the same in mold, the rough casting having to be machined and finished in order to produce an article of good appearance.

The obj eot of this invention is to provide a link which will be substantially cheaper to manufacture than those heretofore known, and which will have a neat appearance without the necessity of machining, although, if so desired, the article may be lacquered, brushed, or finished in any style, in accordance with the finish of the article with which it is desired to be used.

A further object is to provide a blank which is adapted to be easily formed into a link having a boss as already described.

The invention consists essentially of the novel construction and arrangement of the parts whereby a link comprises a boss at one end thereof and lateral members extending from either side of said boss and upwardly, the ends of said lateral members being adjacent to one another, thus forming the link, the whole being formed from sheet metal. For the purpose of producing such a link a blank is provided having a central portion adapted to form the boss of the link, and longitudinal members extending from said central portion and preferably diametrically opposite one another. Thesemembers are adapted to be bent upwardly and inwardly for the purpose of forming the link, all of which is particularly described in the following specification and with reference to the accompanying drawing in which- Figure 1 is a perspective view of the improved link. Fig. 2 is a plan view of the blank used to form said link. Fig. 3 is an elevation of the same. Fig. l is a sectional elevation of the blank, Fig. 2, after the boss has been formed therein, and tapped. Fig. 5 is asimilar'view to Fig. 4 indicating the longitudinal members turned upwardly and preferably at right angles to what is now the base of the link. Fig. 6 is an elevation of the completed link after the upper ends of the longitudinal members have been brought together, and Fig. 7 is a plan view of the same.

Similar letters of reference indicate similar parts in the several figures of the drawlng.

a is the boss of the link, while I; and 0 are the lateral members which extend outwardly and upwardly from the boss at, their ends being brought together and meeting so as to form the closed link, and in the drawings the ends of the lateral members are shown to meet at the opposite end of the link to the boss at, but may meet at one or other side of the link if necessary or desirable. Tongues d and e may be provided to effect a neater and stronger joint at the meeting ends of the lateral members. In manufacturing such a link, a sheet metal blank, as seen in Figs. 2 and 3 is provided and comprises a substantially enlarged circular or other shaped central part 1, from which extend longitudinal members 72 and 0 the said members being preferably diametrically opposite one another. The first process in treating this blank is'to punch out the center of the portion a while at the same time forcing the adjacent parts upwardly until they assume approximately the configuration of the boss at, as shown in Fig. 4. The inner surface of the boss is then tapped, but it will be understood that the tapping of the boss may take place at any stage in the process of manufacture. The longitudinal members 6 and 0 are next bent upwardly, preferably at right angles to their original position, in which the configuration illustrated in Fig. 5 is assumed. The final process is to effect the drawing together of the upper ends of the parts I) and 0 until they meet and form a link.

In order to increase the strength of the link at the meeting ends of the lateral members b and 0, the blank may be provided with tongues 03 and 6 upon the parts 6} and 0 respectively, the said tongues being disposed on opposite sides of the longitudinal members in such manner that, When the link is completed, the said tongues will lie adjacent to one another as is shown in Fig.7.

To eii'ect the various operations described, a set of dies may be used consecutively or a matrix may be used around which a link may be formed in one continuous operation, the 'boss at being subsequently tapped.

The boss is tapped so as to allow the same to be attached to ceiling plates or lamp fittings.

This invention may be developed Within the scope of the following claims Without departing from the essential features thereof, and it is desired, that the specification and drawing be read as being merely illustrative and not in a limiting sense, except as necessitated by the prior art.

What I claim as my invention is:

1. A sheet metal link comprising an internally threaded boss, lateral members extending from said boss, tongues upon the ends of said lateral members, the endso'f 7 said members and tongues meeting, substanends ofsaid lateral members, the ends of said members and tongues meeting to form a flush joint at their juncture, substantially as described.

3. A sheet metal link comprising aninternally threaded boss, lateral members extending in diametrically opposite direction from the lowermost portion of said boss, tongues upon the ends of said lateral members, the endsof said members and tongues meeting, substantially as described;

Signed at Toronto, in the county of York, in the Province of Ontario, in the Dominion ofCanada, this 3rd day of April, 191d.

- WILLIAM G. HUNT.

Witnesses: I

S. LIGHTIOOT, L. CHENERIGHT.

Copies-01th patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. C. 

